How to Winterize a Wimberley Cabin or Vacation Rental

The most expensive plumbing disasters I see are almost always the same story: a cabin or rental sitting empty and unheated when a hard freeze rolls through. Nobody is there to run water or catch a problem, the pipes freeze, and days later at the thaw they let go and flood the place. If your Wimberley property will sit cold this winter, winterizing it properly is the difference between a quiet season and a ruined one.

There are two approaches: keep the cabin heated, or fully winterize the plumbing. Which one is right depends on how the property is used.

Option One: Keep It Heated

If your cabin has bookings through winter with only short gaps, the simplest protection is to keep the heat on. Set the thermostat no lower than about 55 degrees, even between guests, and never turn the heat fully off in freezing weather to save a few dollars. Open cabinet doors under sinks on exterior walls so warm air reaches the pipes, and consider leaving a slow trickle running at a few faucets during a hard freeze to keep water moving.

Option Two: Full Winterization

If the cabin will sit empty for a long winter stretch, the safest approach is to remove the water from the plumbing entirely, so there is nothing to freeze. This is what we do for seasonal properties, and it is the surest protection. Done right, it involves:

1. Shutting off the water supply at the main or the well
2. Draining all the pipes by opening every faucet from the highest to the lowest
3. Draining the water heater and shutting it down
4. Flushing and emptying toilets, then adding non-toxic antifreeze to traps
5. Adding antifreeze to sink, tub, and floor drain traps so they cannot freeze

Do Not Forget the Well

Well homes need extra attention. The pressure tank, the pump house, and any above-ground piping are all exposed to the cold and can freeze and crack. Insulate the well house, protect the pressure tank, and make sure any exposed lines are wrapped. Our well pump service team can assess whether your well setup is truly ready for a hard freeze, because a cracked pressure tank in February is an expensive surprise.

The Traps Everyone Forgets

Even with the supply drained, water sits in the P-traps under every sink, tub, and floor drain, and in the toilet bowl. That trapped water can freeze and crack the fitting. This is why full winterization includes adding non-toxic plumbing antifreeze, the pink RV kind, to every trap and toilet. It is a small step that saves a cracked drain assembly hidden inside a wall.

Have Someone Check On It

No matter which approach you choose, a set of local eyes during a cold snap is invaluable. A neighbor, a property manager, or a plumber who can check that the heat is still on and nothing has gone wrong catches problems while they are small. Remote owners in particular need this, because a failure you learn about a week late is a flood you learn about a week late.

Reversing It in Spring

When the cabin comes back into use, de-winterizing is more than just turning the water back on. Traps need to be flushed, the water heater refilled before it is powered, and the whole system checked for any freeze damage that may have happened despite your precautions. Rushing this step is how people crack a dry-fired water heater element. We handle both ends of the season for owners who would rather not risk it.

Water you drained cannot freeze and cannot burst. That is the whole logic of winterizing, and it is why an empty cabin should never sit full of water in a Texas cold snap.— Blanco River Plumbing Co.

Let Us Winterize It Right

Winterizing sounds simple, but the details, the traps, the well, the water heater, are where people get caught. We winterize and de-winterize cabins and rentals throughout the Hill Country, from Wimberley out to the lake country around Canyon Lake. Our freeze protection service covers the whole job, and our recap of the 2021 freeze shows exactly why it matters.

A Quick Cost Comparison

Owners sometimes balk at paying for winterization and de-winterization, so let me put it in perspective. A burst pipe in an empty cabin does not just cost the pipe repair. It floods the structure, ruins flooring and drywall, breeds mold in our humid air, and, if it is a rental, cancels weeks of bookings while the place is repaired. That is easily thousands of dollars and a lost season. Proper winterizing is a small fraction of that, and it removes the risk almost entirely by taking the water out of the equation.

The math is even starker for absentee owners hours away, who may not learn of a failure for days. For them, the peace of mind alone is worth it, knowing the cabin cannot flood because there is nothing in the lines to freeze. Whether you handle it yourself or have us do it, the important thing is that a cold, empty Hill Country cabin should never sit full of water through a hard freeze. That single principle prevents the most expensive plumbing disasters we see all winter.